Advertising sign



e. 3, 1935. 1 5, MILLR 2,022,684

ADVERTISING SIGN Filed Nov. 50, 1934 2 Sheets-Sheet 2 Patented Dec. 3, 1935 PATENT OFFICE ADVERTISING SIGN Leonard S. Miller, Chicago, Ill., assignor to The Arora Corporation, a. corporation of Illinois Application November 30, 1934, Serial No. '755,470

2 Claims.

This invention relates to an advertising sign, and particularly to a lighted sign surrounded by a corona.

The invention is illustrated in the drawings, in which Fig. l is a front elevation of one form of sign; Fig. 2 is a section along the line 2 in Fig. l; and Fig. 3 is a side elevation of the central drum shown in Fig. 2; Fig. 4 is a front elevation of a modified form of sign; Fig. 5 is a sectional View along the line 5 in Fig. 4; Fig. 6 is a front elevation of a further form of sign; and Fig. 7 is a plan view of a frame, showing color bands.

'I'he sign comprises a light-producing element such as an electric lightvl behind a transparent or translucent plate 2 which may be provided with such advertising matter as is desired. Plate 2 is set in a frame 3 which encompasses the light I. In the modication shown in Figs. 1, 2 and 3 this frame is in the form of a right circular cylinder with a light at its center. The wall of the cylinder is transparent or translucent, and may be painted with appropriate pigments in the' desired sequence and combination. The arrangement of the colored bands which are shown at 4 in Fig. 3 is such that light passing through any particular band will cut across the corrugations 5 on the reflector 6. In this manner a corona effect is produced upon the reflector which is exceedingly brilliant, and attractive to the eye.

The corona effect is indicated by the shading at 8 in Fig. 1.

The reiiector E is a mirrored corrugated annulus about the cylinder 3. The corrugations preferably have an axis generally running toward the light, and the corrugations preferably are radial with respect to some point or points in the general direction of the light. In the instance shown in Fig. 1, the corrugations are radial with respect to the light. The corrugations are likewise made rather close together in order that bands of color will cross several corrugations and thereby heighten the corona effect. For example, with a cylinder about 14 in diameter a satisfactory Width for a complete corrugation is about 112". The angle of the corrugations is preferably made fairly steep in order to accentuate the corona effect. A satisfactory angle is about 30.

The annulus t is bent into the form of a cone, preferably at about a 45 angle in order that light striking thereon will be in general reflected directly ahead. The depth of the cone is controlled in general by the depth of the cylinder or frame. If the cone is deeper than the frame, blind spots or dead spots will appear in the corona.

The plate 2 is generally of glass, and may be made convex or such other shape as desired. A

. Modified forms of the sign are shown in Figs. 4, 5 and 6. In Fig. 5 the frame is rectangular and the mirrored surface is of a general fan-like form. The frame 3a has irregular bands of color painted upon the upper and lower surfaces thereof. In this instance, instead of having the bands of color pass completely across the surface, they are zigzag in a general fan-like shape in such manner that no band of color completely crosses the reflector. -A pattern for this is shown in Fig. 7.

Fig. 6 shows a similar light having a rectangular frame having its long side vertical, but in this case the radius of the corrugations is a point in the center of the lower side of the rectangle. In Fig. 4 the corrugations have no common radius, but in each case the axis of the corrugation is perpendicular to a tangent to a curve connecting the points of the corrugation. However, the corrugations are in general radial with respect to the lights in the sign.

The corona effect may be produced in other manners, for instance a used and the corona effect built up upon the frame. Such a structure would not give the changing effects produced by motion of the observer which are characteristic of the present device, however.

'I'he effect of the corona may be heightened by encasing the sign in a black or dark background 1 as shown in Fig. 6.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible in view of the prior art.

What I claim as new Letters Patent is:

1. An interiorly illuminated box-like sign hav ing a translucent front adapted to receive a display, and having also a translucent side not directly visible from the front in combination with a reiiector inclined outward and forward from the rear of the translucent side, in which reflector the translucent side is visible from the front, the translucent side having a pattern of contrasting colors, and the reflector being corrugated, the pattern and reector corrugation being so correlated that each reiiector section shows a parti-colored section of the pattern and the adjacent reflector sections show different particolored sections of the pattern.

2. 'I'he sign of claim l, in which the corrugations of the reflector are fan-like.

and desire to secure by LEONARD S. MILLER.

plain reiiector may be' 

